Electronic device, cover device and control method for recognizing signals and controlling a display module of electronic device

Abstract

An electronic device is provided and includes a housing, and a display module disposed on a front surface of the housing and including a display panel, a conductive pattern, and a digitizer panel disposed under the display panel; a digitizer circuit connected to the digitizer panel; and a processor electrically connected to the display module and the digitizer circuit. The digitizer circuit may be configured to recognize a first signal generated as the first cover of a cover device including a cover coil approaches the digitizer panel; and recognize a second signal generated as a pen input device approaches the digitizer panel. The processor may be configured to control the display module in response to recognition of the first signal and the second signal.

What is claimed is: 
     
       1. An electronic device, comprising:
 a housing; 
 a detection sensor disposed in the housing; 
 a display module disposed on a front surface of the housing and comprising a display panel, a conductive pattern, and a digitizer panel disposed under the display panel; 
 a digitizer circuit connected to the digitizer panel, wherein the digitizer circuit is configured to: 
 recognize a first signal generated as a first cover of a cover device including a cover coil approaches the digitizer panel, and 
 recognize a second signal generated as a pen input device approaches the digitizer panel; 
 one or more processors electrically connected to the display module and the digitizer circuit; and 
 a memory storing one or more computer programs including computer-executable instructions that, when executed by the one or more processors, cause the electronic device to: 
 control the display module in response to recognition of the first signal and the second signal, and 
 check whether a second cover that is foldably connected to the first cover of the cover device is attached to a rear surface of the housing by using the detection sensor, and transmit a confirmation command to the digitizer circuit. 
 
     
     
       2. The electronic device of  claim 1 , wherein the one or more computer programs further comprise computer-executable instructions that, when executed by the one or more processors, cause the electronic device to control the display module based on a strength of the first signal. 
     
     
       3. The electronic device of  claim 1 , wherein the one or more computer programs further comprise computer-executable instructions that, when executed by the one or more processors, cause the electronic device to control the display module by identifying an angle between the display module and the first cover of the cover device based on a strength of the first signal. 
     
     
       4. The electronic device of  claim 1 ,
 wherein the digitizer circuit is further configured to control the digitizer panel to recognize the first signal in response to the confirmation command. 
 
     
     
       5. The electronic device of  claim 4 , wherein the one or more computer programs further comprise computer-executable instructions that, when executed by the one or more processors, cause the electronic device to check whether the second cover is detached from the rear surface of the housing by using the detection sensor, and transmit a stop command to the digitizer circuit; and
 wherein the digitizer circuit is further configured to control the digitizer panel not to recognize the first signal in response to the stop command. 
 
     
     
       6. The electronic device of  claim 4 , wherein the second cover of the cover device includes a magnetic substance, and
 wherein the detection sensor includes a Hall sensor that detects a change in a magnetic field. 
 
     
     
       7. The electronic device of  claim 1 , further comprising a connection portion electrically connected to a cover connection portion of the cover device, wherein the one or more computer programs further comprise computer-executable instructions that, when executed by the one or more processors, cause the electronic device to transmit a stop command to the digitizer circuit in response to the cover connection portion that is connected to the connection portion, and
 wherein the digitizer circuit is further configured to control the digitizer panel not to recognize the first signal in response to the stop command. 
 
     
     
       8. A cover device, comprising:
 a first cover formed to cover a front surface of an electronic device; 
 a second cover formed to cover a rear surface of the electronic device; 
 a first folding part that foldably connects the first cover and the second cover; 
 an input device disposed on the first cover; and 
 a cover coil disposed on the first cover and configured to generate a first signal when approaching a digitizer panel of the electronic device, 
 wherein the second cover includes a first sub-cover foldably connected to the first cover through the first folding part, a second folding part, and a second sub-cover foldably connected to the first sub-cover through the second folding part and including a magnetic substance, 
 wherein the magnetic substance in the second sub-cover is detected by a detection sensor of the electronic device such that the electronic device identifies that the second cover is attached to the rear surface of the electronic, and 
 wherein when the first sub-cover of the second cover is detached from the rear surface of the electronic device, the second sub-cover is configured to be tilted with respect to the first sub-cover such that the cover device supports the electronic device with a specific angle. 
 
     
     
       9. The cover device of  claim 8 , wherein the cover coil is disposed between the input device and the first folding part. 
     
     
       10. The cover device of  claim 8 , further comprising a receiving portion that is formed to accommodate the pen input device and is disposed in the first folding part. 
     
     
       11. The cover device of  claim 8 , further comprising a cover connection portion that is disposed on the first cover to enable the cover device to be electrically connected to a connection portion of the electronic device. 
     
     
       12. A method for controlling a display module including a digitizer panel, the method comprising:
 recognizing, by a digitizer circuit, a first signal generated as a first cover of a cover device including a cover coil approaches the digitizer panel; 
 recognizing, by the digitizer circuit, a second signal generated as a pen input device approaches the digitizer panel; 
 controlling, by a processor, the display module in response to recognition of the first signal and the second signal; and 
 transmitting, by the processor, a confirmation command to the digitizer circuit by checking whether a second cover that is foldably connected to the first cover of the cover device is attached through a detection sensor, 
 wherein the digitizer circuit recognizes whether the first signal is executed based on the confirmation command. 
 
     
     
       13. The method of  claim 12 , wherein the processor controls the display module based on a strength of the first signal. 
     
     
       14. The method of  claim 12 , wherein the first signal and the second signal have different frequencies. 
     
     
       15. The method of  claim 12 , further comprising transmitting, by the processor, a stop command to the digitizer circuit by checking whether the second cover is detached through the detection sensor,
 wherein the digitizer circuit recognizes whether the first signal is stopped based on the stop command. 
 
     
     
       16. The method of  claim 12 , further comprising:
 checking, by the processor, whether a connection portion and a cover connection portion of the cover device are electrically connected, and 
 transmitting a stop command to the digitizer circuit in response to the cover connection portion being connected to the connection portion, 
 wherein the digitizer circuit recognizes whether the first signal is stopped based on the stop command.